Josh Triplett [Wed, 15 Feb 2023 00:42:22 +0000 (16:42 -0800)]
io_uring: Support calling io_uring_register with a registered ring fd
Add a new flag IORING_REGISTER_USE_REGISTERED_RING (set via the high bit
of the opcode) to treat the fd as a registered index rather than a file
descriptor.
This makes it possible for a library to open an io_uring, register the
ring fd, close the ring fd, and subsequently use the ring entirely via
registered index.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Link: https://lore.kernel.org/r/f2396369e638284586b069dbddffb8c992afba95.1676419314.git.josh@joshtriplett.org
[axboe: remove extra high bit clear]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Richard Guy Briggs [Wed, 1 Feb 2023 20:33:33 +0000 (15:33 -0500)]
io_uring,audit: don't log IORING_OP_MADVISE
fadvise and madvise both provide hints for caching or access pattern for
file and memory respectively. Skip them.
Fixes: 5bd2182d58e9 ("audit,io_uring,io-wq: add some basic audit support to io_uring")
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Link: https://lore.kernel.org/r/b5dfdcd541115c86dbc774aa9dd502c964849c5f.1675282642.git.rgb@redhat.com
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Mon, 6 Feb 2023 15:20:46 +0000 (08:20 -0700)]
io_uring: mark task TASK_RUNNING before handling resume/task work
Just like for task_work, set the task mode to TASK_RUNNING before doing
any potential resume work. We're not holding any locks at this point,
but we may have already set the task state to TASK_INTERRUPTIBLE in
preparation for going to sleep waiting for events. Ensure that we set it
back to TASK_RUNNING if we have work to process, to avoid warnings on
calling blocking operations with !TASK_RUNNING.
Fixes: b5d3ae202fbf ("io_uring: handle TIF_NOTIFY_RESUME when checking for task_work")
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/oe-lkp/202302062208.24d3e563-oliver.sang@intel.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dylan Yudaken [Fri, 27 Jan 2023 13:52:27 +0000 (05:52 -0800)]
io_uring: always go async for unsupported open flags
No point in issuing -> return -EAGAIN -> go async, when it can be done upfront.
Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20230127135227.3646353-5-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dylan Yudaken [Fri, 27 Jan 2023 13:52:26 +0000 (05:52 -0800)]
io_uring: always go async for unsupported fadvise flags
No point in issuing -> return -EAGAIN -> go async, when it can be done upfront.
Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20230127135227.3646353-4-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dylan Yudaken [Fri, 27 Jan 2023 13:52:25 +0000 (05:52 -0800)]
io_uring: for requests that require async, force it
Some requests require being run async as they do not support
non-blocking. Instead of trying to issue these requests, getting -EAGAIN
and then queueing them for async issue, rather just force async upfront.
Add WARN_ON_ONCE to make sure surprising code paths do not come up,
however in those cases the bug would end up being a blocking
io_uring_enter(2) which should not be critical.
Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20230127135227.3646353-3-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dylan Yudaken [Fri, 27 Jan 2023 13:52:24 +0000 (05:52 -0800)]
io_uring: if a linked request has REQ_F_FORCE_ASYNC then run it async
REQ_F_FORCE_ASYNC was being ignored for re-queueing linked
requests. Instead obey that flag.
Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20230127135227.3646353-2-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Fri, 27 Jan 2023 16:50:31 +0000 (09:50 -0700)]
io_uring: add reschedule point to handle_tw_list()
If CONFIG_PREEMPT_NONE is set and the task_work chains are long, we
could be running into issues blocking others for too long. Add a
reschedule check in handle_tw_list(), and flush the ctx if we need to
reschedule.
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Fri, 27 Jan 2023 16:28:13 +0000 (09:28 -0700)]
io_uring: add a conditional reschedule to the IOPOLL cancelation loop
If the kernel is configured with CONFIG_PREEMPT_NONE, we could be
sitting in a tight loop reaping events but not giving them a chance to
finish. This results in a trace ala:
rcu: INFO: rcu_sched self-detected stall on CPU
rcu: 2-...!: (5249 ticks this GP) idle=935c/1/0x4000000000000000 softirq=4265/4274 fqs=1
(t=5251 jiffies g=465 q=4135 ncpus=4)
rcu: rcu_sched kthread starved for 5249 jiffies! g465 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_sched state:R running task stack:0 pid:12 ppid:2 flags:0x00000008
Call trace:
__switch_to+0xb0/0xc8
__schedule+0x43c/0x520
schedule+0x4c/0x98
schedule_timeout+0xbc/0xdc
rcu_gp_fqs_loop+0x308/0x344
rcu_gp_kthread+0xd8/0xf0
kthread+0xb8/0xc8
ret_from_fork+0x10/0x20
rcu: Stack dump where RCU GP kthread last ran:
Task dump for CPU 0:
task:kworker/u8:10 state:R running task stack:0 pid:89 ppid:2 flags:0x0000000a
Workqueue: events_unbound io_ring_exit_work
Call trace:
__switch_to+0xb0/0xc8
0xffff0000c8fefd28
CPU: 2 PID: 95 Comm: kworker/u8:13 Not tainted
6.2.0-rc5-00042-g40316e337c80-dirty #2759
Hardware name: linux,dummy-virt (DT)
Workqueue: events_unbound io_ring_exit_work
pstate:
61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : io_do_iopoll+0x344/0x360
lr : io_do_iopoll+0xb8/0x360
sp :
ffff800009bebc60
x29:
ffff800009bebc60 x28:
0000000000000000 x27:
0000000000000000
x26:
ffff0000c0f67d48 x25:
ffff0000c0f67840 x24:
ffff800008950024
x23:
0000000000000001 x22:
0000000000000000 x21:
ffff0000c27d3200
x20:
ffff0000c0f67840 x19:
ffff0000c0f67800 x18:
0000000000000000
x17:
0000000000000000 x16:
0000000000000000 x15:
0000000000000000
x14:
0000000000000001 x13:
0000000000000001 x12:
0000000000000000
x11:
0000000000000179 x10:
0000000000000870 x9 :
ffff800009bebd60
x8 :
ffff0000c27d3ad0 x7 :
fefefefefefefeff x6 :
0000646e756f626e
x5 :
ffff0000c0f67840 x4 :
0000000000000000 x3 :
ffff0000c2398000
x2 :
0000000000000000 x1 :
0000000000000000 x0 :
0000000000000000
Call trace:
io_do_iopoll+0x344/0x360
io_uring_try_cancel_requests+0x21c/0x334
io_ring_exit_work+0x90/0x40c
process_one_work+0x1a4/0x254
worker_thread+0x1ec/0x258
kthread+0xb8/0xc8
ret_from_fork+0x10/0x20
Add a cond_resched() in the cancelation IOPOLL loop to fix this.
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:19 +0000 (14:37 +0000)]
io_uring: return normal tw run linking optimisation
io_submit_flush_completions() may produce new task_work items, so it's a
good idea to recheck the task_work list after flushing completions. The
optimisation is not new and was accidentially removed by
f88262e60bb9 ("io_uring: lockless task list")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a7ed5ede84de190832cc33ebbcdd6e91cd90f5b6.1674484266.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:18 +0000 (14:37 +0000)]
io_uring: refactor tctx_task_work
Merge almost identical sections of tctx_task_work(), this will make code
modifications later easier and also inlines handle_tw_list().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d06592d91e3e7559e7a4dbb8907d110863008dc7.1674484266.git.asml.silence@gmail.com
[axboe: fold in setting count to zero patch from Tom Rix]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:17 +0000 (14:37 +0000)]
io_uring: refactor io_put_task helpers
Add a helper for putting refs from the target task context, rename
__io_put_task() and add a couple of comments around. Use the remote
version for __io_req_complete_post(), the local is only needed for
__io_submit_flush_completions().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/3bf92ebd594769d8a5d648472a8e335f2031d542.1674484266.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:16 +0000 (14:37 +0000)]
io_uring: refactor req allocation
Follow the io_get_sqe pattern returning the result via a pointer
and hide request cache refill inside io_alloc_req().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8c37c2e8a3cb5e4cd6a8ae3b91371227a92708a6.1674484266.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:15 +0000 (14:37 +0000)]
io_uring: improve io_get_sqe
Return an SQE from io_get_sqe() as a parameter and use the return value
to determine if it failed or not. This enables the compiler to compile out
the sqe NULL check when we know that the return SQE is valid.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9cceb11329240ea097dffef6bf0a675bca14cf42.1674484266.git.asml.silence@gmail.com
[axboe: remove bogus const modifier on return value]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:14 +0000 (14:37 +0000)]
io_uring: kill outdated comment about overflow flush
__io_cqring_overflow_flush() doesn't return anything anymore, remove
outdate comment.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/4ce2bcbb17eac80cdf883fd1459d5ee6586e238c.1674484266.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 23 Jan 2023 14:37:13 +0000 (14:37 +0000)]
io_uring: use user visible tail in io_uring_poll()
We return POLLIN from io_uring_poll() depending on whether there are
CQEs for the userspace, and so we should use the user visible tail
pointer instead of a transient cached value.
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/228ffcbf30ba98856f66ffdb9a6a60ead1dd96c0.1674484266.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Fri, 20 Jan 2023 16:10:30 +0000 (09:10 -0700)]
io_uring: pass in io_issue_def to io_assign_file()
This generates better code for me, avoiding an extra load on arm64, and
both call sites already have this variable available for easy passing.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Breno Leitao [Wed, 18 Jan 2023 15:56:30 +0000 (07:56 -0800)]
io_uring: Enable KASAN for request cache
Every io_uring request is represented by struct io_kiocb, which is
cached locally by io_uring (not SLAB/SLUB) in the list called
submit_state.freelist. This patch simply enabled KASAN for this free
list.
This list is initially created by KMEM_CACHE, but later, managed by
io_uring. This patch basically poisons the objects that are not used
(i.e., they are the free list), and unpoisons it when the object is
allocated/removed from the list.
Touching these poisoned objects while in the freelist will cause a KASAN
warning.
Suggested-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Tue, 24 Jan 2023 15:24:25 +0000 (08:24 -0700)]
io_uring: handle TIF_NOTIFY_RESUME when checking for task_work
If TIF_NOTIFY_RESUME is set, then we need to call resume_user_mode_work()
for PF_IO_WORKER threads. They never return to usermode, hence never get
a chance to process any items that are marked by this flag. Most notably
this includes the final put of files, but also any throttling markers set
by block cgroups.
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Sun, 22 Jan 2023 02:53:41 +0000 (19:53 -0700)]
io_uring/msg-ring: ensure flags passing works for task_work completions
If the target ring is using IORING_SETUP_SINGLE_ISSUER and we're posting
a message from a different thread, then we need to ensure that the
fallback task_work that posts the CQE knwos about the flags passing as
well. If not we'll always be posting 0 as the flags.
Fixes: 3563d7ed58a5 ("io_uring/msg_ring: Pass custom flags to the cqe")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Breno Leitao [Thu, 12 Jan 2023 14:44:11 +0000 (06:44 -0800)]
io_uring: Split io_issue_def struct
This patch removes some "cold" fields from `struct io_issue_def`.
The plan is to keep only highly used fields into `struct io_issue_def`, so,
it may be hot in the cache. The hot fields are basically all the bitfields
and the callback functions for .issue and .prep.
The other less frequently used fields are now located in a secondary and
cold struct, called `io_cold_def`.
This is the size for the structs:
Before: io_issue_def = 56 bytes
After: io_issue_def = 24 bytes; io_cold_def = 40 bytes
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20230112144411.2624698-2-leitao@debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Breno Leitao [Thu, 12 Jan 2023 14:44:10 +0000 (06:44 -0800)]
io_uring: Rename struct io_op_def
The current io_op_def struct is becoming huge and the name is a bit
generic.
The goal of this patch is to rename this struct to `io_issue_def`. This
struct will contain the hot functions associated with the issue code
path.
For now, this patch only renames the structure, and an upcoming patch
will break up the structure in two, moving the non-issue fields to a
secondary struct.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20230112144411.2624698-1-leitao@debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 16 Jan 2023 16:49:01 +0000 (16:49 +0000)]
io_uring: refactor __io_req_complete_post
Keep parts of __io_req_complete_post() relying on req->flags together so
the value can be cached.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2b4fbb42f404a0e75c4d9f0a5b16f314a839d0a9.1673887636.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 16 Jan 2023 16:49:00 +0000 (16:49 +0000)]
io_uring: optimise ctx flags layout
There may be different cost for reeading just one byte or more, so it's
benificial to keep ctx flag bits that we access together in a single
byte. That affected code generation of __io_cq_unlock_post_flush() and
removed one memory load.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/bbe8ca4705704690319d65e45845f9fc9d35f420.1673887636.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 16 Jan 2023 16:48:59 +0000 (16:48 +0000)]
io_uring: simplify fallback execution
Lock the ring with uring_lock in io_fallback_req_func(), which should
make it a bit safer and easier. With that we also don't need refs
pinning as io_ring_exit_work() will wait until uring_lock is freed.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/56170e6a0cbfc8edee2794c6613e8f6f1d76d276.1673887636.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 16 Jan 2023 16:48:58 +0000 (16:48 +0000)]
io_uring: don't export io_put_task()
io_put_task() is only used in uring.c so enclose it there together with
__io_put_task().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/43c7f9227e2ab215f1a6069dadbc5382bed346fe.1673887636.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 16 Jan 2023 16:48:57 +0000 (16:48 +0000)]
io_uring: return back links tw run optimisation
io_submit_flush_completions() may queue new requests for tw execution,
especially true for linked requests. Recheck the tw list for emptiness
after flushing completions.
Note that this doesn't really fix the commit referenced below, but it
does reinstate an optimization that existed before that got merged.
Fixes: f88262e60bb9 ("io_uring: lockless task list")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/6328acdbb5e60efc762b18003382de077e6e1367.1673887636.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Quanfa Fu [Sun, 15 Jan 2023 07:15:19 +0000 (15:15 +0800)]
io_uring: make io_sqpoll_wait_sq return void
Change the return type to void since it always return 0, and no need
to do the checking in syscall io_uring_enter.
Signed-off-by: Quanfa Fu <quanfafu@gmail.com>
Link: https://lore.kernel.org/r/20230115071519.554282-1-quanfafu@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:13 +0000 (14:46 +0000)]
io_uring: optimise deferred tw execution
We needed fake nodes in __io_run_local_work() and to avoid unecessary wake
ups while the task already running task_works, but we don't need them
anymore since wake ups are protected by cq_waiting, which is always
cleared by the time we're executing deferred task_work items.
Note that because of loose sync around cq_waiting clearing
io_req_local_work_add() may wake the task more than once, but that's
fine and should be rare to not hurt perf.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8839534891f0a2f1076e78554a31ea7e099f7de5.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:12 +0000 (14:46 +0000)]
io_uring: add io_req_local_work_add wake fast path
Don't wake the master task after queueing a deferred tw unless it's
currently waiting in io_cqring_wait.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/717702d772825a6647e6c315b4690277ba84c3fc.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:11 +0000 (14:46 +0000)]
io_uring: waitqueue-less cq waiting
With DEFER_TASKRUN only ctx->submitter_task might be waiting for CQEs,
we can use this to optimise io_cqring_wait(). Replace ->cq_wait
waitqueue with waking the task directly.
It works but misses an important optimisation covered by the following
patch, so this patch without follow ups might hurt performance.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/103d174d35d919d4cb0922d8a9c93a8f0c35f74a.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:10 +0000 (14:46 +0000)]
io_uring: wake up optimisations
Flush completions is done either from the submit syscall or by the
task_work, both are in the context of the submitter task, and when it
goes for a single threaded rings like implied by ->task_complete, there
won't be any waiters on ->cq_wait but the master task. That means that
there can be no tasks sleeping on cq_wait while we run
__io_submit_flush_completions() and so waking up can be skipped.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/60ad9768ec74435a0ddaa6eec0ffa7729474f69f.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:09 +0000 (14:46 +0000)]
io_uring: add lazy poll_wq activation
Even though io_poll_wq_wake()'s waitqueue_active reuses a barrier we do
for another waitqueue, it's not going to be the case in the future and
so we want to have a fast path for it when the ring has never been
polled.
Move poll_wq wake ups into __io_commit_cqring_flush() using a new flag
called ->poll_activated. The idea behind the flag is to set it when the
ring was polled for the first time. This requires additional sync to not
miss events, which is done here by using task_work for ->task_complete
rings, and by default enabling the flag for all other types of rings.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/060785e8e9137a920b232c0c7f575b131af19cac.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:08 +0000 (14:46 +0000)]
io_uring: separate wq for ring polling
Don't use ->cq_wait for ring polling but add a separate wait queue for
it. We need it for following patches.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/dea0be0bf990503443c5c6c337fc66824af7d590.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:07 +0000 (14:46 +0000)]
io_uring: move io_run_local_work_locked
io_run_local_work_locked() is only used in io_uring.c, move it there.
With that we can also make __io_run_local_work() static.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/91757bcb33e5774e49fed6f2b6e058630608119b.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:06 +0000 (14:46 +0000)]
io_uring: mark io_run_local_work static
io_run_local_work is enclosed in io_uring.c, we don't need to export it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b477fb81f5e77044f724a06fe245d5c078659364.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:05 +0000 (14:46 +0000)]
io_uring: don't set TASK_RUNNING in local tw runner
The CQ waiting loop sets TASK_RUNNING before trying to execute
task_work, no need to repeat it in io_run_local_work().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9d9422c429ef3f9457b4f4b8288bf4789564f33b.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:04 +0000 (14:46 +0000)]
io_uring: refactor io_wake_function
Remove a local variable ctx in io_wake_function(), we don't need it if
io_should_wake() triggers it to wake up.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e60eb1008aebe286aab7d34c772ed01c447bddb1.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Mon, 9 Jan 2023 14:46:03 +0000 (14:46 +0000)]
io_uring: move submitter_task out of cold cacheline
->submitter_task is used somewhat more frequent now than before, i.e.
for local tw enqueue and run, let's move it from the end of ctx, which
is full of cold data, to the first cacheline with mostly constants.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/415ca91dc5ad1dec612b892e489cda98e1069542.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dmitrii Bundin [Mon, 9 Jan 2023 18:58:54 +0000 (21:58 +0300)]
io_uring: remove excessive unlikely on IS_ERR
The IS_ERR function uses the IS_ERR_VALUE macro under the hood which
already wraps the condition into unlikely.
Signed-off-by: Dmitrii Bundin <dmitrii.bundin.a@gmail.com>
Link: https://lore.kernel.org/r/20230109185854.25698-1-dmitrii.bundin.a@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Breno Leitao [Tue, 3 Jan 2023 16:05:07 +0000 (08:05 -0800)]
io_uring/msg_ring: Pass custom flags to the cqe
This patch adds a new flag (IORING_MSG_RING_FLAGS_PASS) in the message
ring operations (IORING_OP_MSG_RING). This new flag enables the sender
to specify custom flags, which will be copied over to cqe->flags in the
receiving ring. These custom flags should be specified using the
sqe->file_index field.
This mechanism provides additional flexibility when sending messages
between rings.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20230103160507.617416-1-leitao@debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:29 +0000 (11:22 +0000)]
io_uring: keep timeout in io_wait_queue
Move waiting timeout into io_wait_queue
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e4b48a9e26a3b1cf97c80121e62d4b5ab873d28d.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:28 +0000 (11:22 +0000)]
io_uring: optimise non-timeout waiting
Unlike the jiffy scheduling version, schedule_hrtimeout() jumps a few
functions before getting into schedule() even if there is no actual
timeout needed. Some tests showed that it takes up to 1% of CPU cycles.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/89f880574eceee6f4899783377ead234df7b3d04.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:27 +0000 (11:22 +0000)]
io_uring: set TASK_RUNNING right after schedule
Instead of constantly watching that the state of the task is running
before executing tw or taking locks in io_cqring_wait(), switch it back
to TASK_RUNNING immediately.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/246dddee247d89fd52023f785ed17cc34962a008.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:26 +0000 (11:22 +0000)]
io_uring: simplify io_has_work
->work_llist should never be non-empty for a non DEFER_TASKRUN ring, so
we can safely skip checking the flag.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/26af9f73c09a56c9a035f94db56127358688f3aa.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:25 +0000 (11:22 +0000)]
io_uring: mimimise io_cqring_wait_schedule
io_cqring_wait_schedule() is called after we started waiting on the cq
wq and set the state to TASK_INTERRUPTIBLE, for that reason we have to
constantly worry whether we has returned the state back to running or
not. Leave only quick checks in io_cqring_wait_schedule() and move the
rest including running task work to the callers. Note, we run tw in the
loop after the sched checks because of the fast path in the beginning of
the function.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2814fabe75e2e019e7ca43ea07daa94564349805.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:24 +0000 (11:22 +0000)]
io_uring: parse check_cq out of wq waiting
We already avoid flushing overflows in io_cqring_wait_schedule() but
only return an error for the outer loop to handle it. Minimise it even
further by moving all ->check_cq parsing there.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9dfcec3121013f98208dbf79368d636d74e1231a.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:23 +0000 (11:22 +0000)]
io_uring: move defer tw task checks
Most places that want to run local tw explicitly and in advance check if
they are allowed to do so. Don't rely on a similar check in
__io_run_local_work(), leave it as a just-in-case warning and make sure
callers checks capabilities themselves.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/990fe0e8e70fd4d57e43625e5ce8fba584821d1a.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:22 +0000 (11:22 +0000)]
io_uring: kill io_run_task_work_ctx
There is only one user of io_run_task_work_ctx(), inline it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/40953c65f7c88fb00cdc4d870ca5d5319fb3d7ea.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:21 +0000 (11:22 +0000)]
io_uring: don't iterate cq wait fast path
Task work runners keep running until all queues tw items are exhausted.
It's also rare for defer tw to queue normal tw and vise versa. Taking it
into account, there is only a dim chance that further iterating the
io_cqring_wait() fast path will get us anything and so we can remove
the loop there.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1f9565726661266abaa5d921e97433c831759ecf.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Thu, 5 Jan 2023 11:22:20 +0000 (11:22 +0000)]
io_uring: rearrange defer list checks
There should be nothing in the ->work_llist for non DEFER_TASKRUN rings,
so we can skip flag checks and test the list emptiness directly. Also
move it out of io_run_local_work() for inlining.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/331d63fd15ca79b35b95c82a82d9246110686392.1672916894.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Sun, 29 Jan 2023 21:59:43 +0000 (13:59 -0800)]
Linux 6.2-rc6
Linus Torvalds [Sun, 29 Jan 2023 19:26:49 +0000 (11:26 -0800)]
Merge tag 'irq_urgent_for_v6.2_rc6' of git://git./linux/kernel/git/tip/tip
Pull irq fix from Borislav Petkov:
- Cleanup the firmware node for the new IRQ MSI domain properly, to
avoid leaking memory
* tag 'irq_urgent_for_v6.2_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/msi: Free the fwnode created by msi_create_device_irq_domain()
Linus Torvalds [Sun, 29 Jan 2023 19:17:34 +0000 (11:17 -0800)]
Merge tag 'x86_urgent_for_v6.2_rc6' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Start checking for -mindirect-branch-cs-prefix clang support too now
that LLVM 16 will support it
- Fix a NULL ptr deref when suspending with Xen PV
- Have a SEV-SNP guest check explicitly for features enabled by the
hypervisor and fail gracefully if some are unsupported by the guest
instead of failing in a non-obvious and hard-to-debug way
- Fix a MSI descriptor leakage under Xen
- Mark Xen's MSI domain as supporting MSI-X
- Prevent legacy PIC interrupts from being resent in software by
marking them level triggered, as they should be, which lead to a NULL
ptr deref
* tag 'x86_urgent_for_v6.2_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build: Move '-mindirect-branch-cs-prefix' out of GCC-only block
acpi: Fix suspend with Xen PV
x86/sev: Add SEV-SNP guest feature negotiation support
x86/pci/xen: Fixup fallout from the PCI/MSI overhaul
x86/pci/xen: Set MSI_FLAG_PCI_MSIX support in Xen MSI domain
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
Linus Torvalds [Sun, 29 Jan 2023 19:06:47 +0000 (11:06 -0800)]
Merge tag 'input-for-v6.2-rc5' of git://git./linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- touchpads on HP 15-* laptops switched back to PS/2 emulation mode
- a quirk for Clevo PCX0DX/TUXEDO XP1511 to make sure keyboard is
responding after resume
* tag 'input-for-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: i8042 - add Clevo PCX0DX to i8042 quirk table
Revert "Input: synaptics - switch touchpad on HP Laptop 15-da3001TU to RMI mode"
Linus Torvalds [Sun, 29 Jan 2023 18:47:22 +0000 (10:47 -0800)]
Merge tag 'cxl-fixes-for-6.2-rc6' of git://git./linux/kernel/git/cxl/cxl
Pull cxl fixes from Dan Williams:
"A couple of fixes for bugs introduced during the merge window. One is
a regression, the other was a bug in the CXL AER handler:
- Fix a crash regression due to module load order of cxl_pmem.ko
- Fix wrong register offset read in CXL AER handling path"
* tag 'cxl-fixes-for-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/pmem: Fix nvdimm unregistration when cxl_pmem driver is absent
cxl: fix cxl_report_and_clear() RAS UE addr mis-assignment
Vlastimil Babka [Fri, 13 Jan 2023 17:33:45 +0000 (18:33 +0100)]
Revert "mm/compaction: fix set skip in fast_find_migrateblock"
This reverts commit
7efc3b7261030da79001c00d92bc3392fd6c664c.
We have got openSUSE reports (Link 1) for 6.1 kernel with khugepaged
stalling CPU for long periods of time. Investigation of tracepoint data
shows that compaction is stuck in repeating fast_find_migrateblock()
based migrate page isolation, and then fails to migrate all isolated
pages.
Commit
7efc3b726103 ("mm/compaction: fix set skip in fast_find_migrateblock")
was suspected as it was merged in 6.1 and in theory can indeed remove a
termination condition for fast_find_migrateblock() under certain
conditions, as it removes a place that always marks a scanned pageblock
from being re-scanned. There are other such places, but those can be
skipped under certain conditions, which seems to match the tracepoint
data.
Testing of revert also appears to have resolved the issue, thus revert
the commit until a more robust solution for the original problem is
developed.
It's also likely this will fix qemu stalls with 6.1 kernel reported in
Link 2, but that is not yet confirmed.
Link: https://bugzilla.suse.com/show_bug.cgi?id=1206848
Link: https://lore.kernel.org/kvm/b8017e09-f336-3035-8344-c549086c2340@kernel.org/
Link: https://lore.kernel.org/lkml/20230125134434.18017-1-mgorman@techsingularity.net/
Fixes: 7efc3b726103 ("mm/compaction: fix set skip in fast_find_migrateblock")
Cc: <stable@vger.kernel.org>
Tested-by: Pedro Falcato <pedro.falcato@gmail.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 28 Jan 2023 19:17:57 +0000 (11:17 -0800)]
Fix up more non-executable files marked executable
Joe found another DT file that shouldn't be executable, and that
frustrated me enough that I went hunting with this script:
git ls-files -s |
grep '^100755' |
cut -f2 |
xargs grep -L '^#!'
and that found another file that shouldn't have been marked executable
either, despite being in the scripts directory.
Maybe these two are the last ones at least for now. But I'm sure we'll
be back in a few years, fixing things up again.
Fixes: 8c6789f4e2d4 ("ASoC: dt-bindings: Add Everest ES8326 audio CODEC")
Fixes: 4d8e5cd233db ("locking/atomics: Fix scripts/atomic/ script permissions")
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 28 Jan 2023 18:52:51 +0000 (10:52 -0800)]
Merge tag '6.2-rc5-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull ksmbd server fixes from Steve French:
"Four smb3 server fixes, all also for stable:
- fix for signing bug
- fix to more strictly check packet length
- add a max connections parm to limit simultaneous connections
- fix error message flood that can occur with newer Samba xattr
format"
* tag '6.2-rc5-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: downgrade ndr version error message to debug
ksmbd: limit pdu length size according to connection status
ksmbd: do not sign response to session request for guest login
ksmbd: add max connections parameter
Linus Torvalds [Sat, 28 Jan 2023 01:41:47 +0000 (17:41 -0800)]
Merge tag '6.2-rc5-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fix from Steve French:
"Fix for reconnect oops in smbdirect (RDMA), also is marked for stable"
* tag '6.2-rc5-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix oops due to uncleared server->smbd_conn in reconnect
Linus Torvalds [Sat, 28 Jan 2023 00:16:57 +0000 (16:16 -0800)]
Merge tag 'block-6.2-2023-01-27' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"Minor tweaks for this release:
- NVMe pull request via Christoph:
- Flush initial scan_work for async probe (Keith Busch)
- Fix passthrough csi check (Keith Busch)
- Fix nvme-fc initialization order (Ross Lagerwall)
- Fix for tearing down non-started device in ublk (Ming)"
* tag 'block-6.2-2023-01-27' of git://git.kernel.dk/linux:
block: ublk: move ublk_chr_class destroying after devices are removed
nvme: fix passthrough csi check
nvme-pci: flush initial scan_work for async probe
nvme-fc: fix initialization order
Linus Torvalds [Sat, 28 Jan 2023 00:15:06 +0000 (16:15 -0800)]
Merge tag 'io_uring-6.2-2023-01-27' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
"Two small fixes for this release:
- Sanitize how async prep is done for drain requests, so we ensure
that it always gets done (Dylan)
- A ring provided buffer recycling fix for multishot receive (me)"
* tag 'io_uring-6.2-2023-01-27' of git://git.kernel.dk/linux:
io_uring: always prep_async for drain requests
io_uring/net: cache provided buffer group value for multishot receives
Linus Torvalds [Sat, 28 Jan 2023 00:09:12 +0000 (16:09 -0800)]
Merge tag 'hardening-v6.2-rc6' of git://git./linux/kernel/git/kees/linux
Pull hardening fixes from Kees Cook:
- Split slow memcpy tests into MEMCPY_SLOW_KUNIT_TEST
- Reorganize gcc-plugin includes for GCC 13
- Silence bcache memcpy run-time false positive warnings
* tag 'hardening-v6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
bcache: Silence memcpy() run-time false positive warnings
gcc-plugins: Reorganize gimple includes for GCC 13
kunit: memcpy: Split slow memcpy tests into MEMCPY_SLOW_KUNIT_TEST
Linus Torvalds [Sat, 28 Jan 2023 00:03:32 +0000 (16:03 -0800)]
Merge tag 'trace-v6.2-rc5' of git://git./linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix filter memory leak by calling ftrace_free_filter()
- Initialize trace_printk() earlier so that ftrace_dump_on_oops shows
data on early crashes.
- Update the outdated instructions in scripts/tracing/ftrace-bisect.sh
- Add lockdep_is_held() to fix lockdep warning
- Add allocation failure check in create_hist_field()
- Don't initialize pointer that gets set right away in enabled_monitors_write()
- Update MAINTAINER entries
- Fix help messages in Kconfigs
- Fix kernel-doc header for update_preds()
* tag 'trace-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
bootconfig: Update MAINTAINERS file to add tree and mailing list
rv: remove redundant initialization of pointer ptr
ftrace: Maintain samples/ftrace
tracing/filter: fix kernel-doc warnings
lib: Kconfig: fix spellos
trace_events_hist: add check for return value of 'create_hist_field'
tracing/osnoise: Use built-in RCU list checking
tracing: Kconfig: Fix spelling/grammar/punctuation
ftrace/scripts: Update the instructions for ftrace-bisect.sh
tracing: Make sure trace_printk() can output as soon as it can be used
ftrace: Export ftrace_free_filter() to modules
Linus Torvalds [Fri, 27 Jan 2023 21:52:38 +0000 (13:52 -0800)]
Merge tag 'i2c-for-6.2-rc6' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A bunch of driver fixes with a tiny bit of new IDs"
* tag 'i2c-for-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: rk3x: fix a bunch of kernel-doc warnings
i2c: axxia: use 'struct' for kernel-doc notation
dt-bindings: i2c: renesas,rzv2m: Fix SoC specific string
i2c: mxs: suppress probe-deferral error message
i2c: designware-pci: Add new PCI IDs for AMD NAVI GPU
i2c: designware: Fix unbalanced suspended flag
i2c: designware: use casting of u64 in clock multiplication to avoid overflow
Linus Torvalds [Fri, 27 Jan 2023 21:47:40 +0000 (13:47 -0800)]
Merge tag 'gpio-fixes-for-v6.2-rc6' of git://git./linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix the -c option in the gpio-event-mode user-space example program
- fix the irq number translation in gpio-ep93xx and make its irqchip
immutable
- add a missing spin_unlock in error path in gpio-mxc
- fix a suspend breakage on System76 and Lenovo Gen2a introduced in
GPIO ACPI
* tag 'gpio-fixes-for-v6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
tools: gpio: fix -c option of gpio-event-mon
gpio: ep93xx: remove unused variable
gpio: ep93xx: Make irqchip immutable
gpio: ep93xx: Fix port F hwirq numbers in handler
gpio: mxc: Unlock on error path in mxc_flip_edge()
gpiolib-acpi: Don't set GPIOs for wakeup in S3 mode
Linus Torvalds [Fri, 27 Jan 2023 21:43:46 +0000 (13:43 -0800)]
Merge tag 'regulator-fix-v6.2-rc5' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"A fix for the DT binding documentation which dropped a property when
being converted to YAML format causing spurious errors validating
device trees for platforms using the device"
* tag 'regulator-fix-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: dt-bindings: samsung,s2mps14: add lost samsung,ext-control-gpios
Linus Torvalds [Fri, 27 Jan 2023 21:39:30 +0000 (13:39 -0800)]
Merge tag 'ovl-fixes-6.2-rc6' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"Fix two bugs, a recent one introduced in the last cycle, and an older
one from v5.11"
* tag 'ovl-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fail on invalid uid/gid mapping at copy up
ovl: fix tmpfile leak
Linus Torvalds [Fri, 27 Jan 2023 21:18:14 +0000 (13:18 -0800)]
Merge tag 'drm-fixes-2023-01-27' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Fairly small this week as well, i915 has a memory leak fix and some
minor changes, and amdgpu has some MST fixes, and some other minor
ones:
drm:
- DP MST kref fix
- fb_helper: check return value
i915:
- Fix BSC default context for Meteor Lake
- Fix selftest-scheduler's modify_type
- memory leak fix
amdgpu:
- GC11.x fixes
- SMU13.0.0 fix
- Freesync video fix
- DP MST fixes
- build fix"
* tag 'drm-fixes-2023-01-27' of git://anongit.freedesktop.org/drm/drm:
amdgpu: fix build on non-DCN platforms.
drm/amd/display: Fix timing not changning when freesync video is enabled
drm/display/dp_mst: Correct the kref of port.
drm/amdgpu/display/mst: update mst_mgr relevant variable when long HPD
drm/amdgpu/display/mst: limit payload to be updated one by one
drm/amdgpu/display/mst: Fix mst_state->pbn_div and slot count assignments
drm/amdgpu: declare firmware for new MES 11.0.4
drm/amdgpu: enable imu firmware for GC 11.0.4
drm/amd/pm: add missing AllowIHInterrupt message mapping for SMU13.0.0
drm/amdgpu: remove unconditional trap enable on add gfx11 queues
drm/fb-helper: Use a per-driver FB deferred I/O handler
drm/fb-helper: Check fb_deferred_io_init() return value
drm/i915/selftest: fix intel_selftest_modify_policy argument types
drm/i915/mtl: Fix bcs default context
drm/i915: Fix a memory leak with reused mmap_offset
drm/drm_vma_manager: Add drm_vma_node_allow_once()
Linus Torvalds [Fri, 27 Jan 2023 21:11:19 +0000 (13:11 -0800)]
Merge tag 'acpi-6.2-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"Add ACPI backlight handling quirks for 3 machines (Hans de Goede)"
* tag 'acpi-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: video: Add backlight=native DMI quirk for Asus U46E
ACPI: video: Add backlight=native DMI quirk for HP EliteBook 8460p
ACPI: video: Add backlight=native DMI quirk for HP Pavilion g6-1d80nr
Linus Torvalds [Fri, 27 Jan 2023 21:01:36 +0000 (13:01 -0800)]
Merge tag 'thermal-6.2-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"Add locking to the Intel int340x thermal control driver to prevent its
thermal zone callbacks from racing with firmware-induced thermal trip
point updates (Srinivas Pandruvada, Rafael Wysocki)"
* tag 'thermal-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: intel: int340x: Add locking to int340x_thermal_get_trip_type()
thermal: intel: int340x: Protect trip temperature from concurrent updates
Linus Torvalds [Fri, 27 Jan 2023 20:56:45 +0000 (12:56 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fix from Will Deacon:
- Fix event counting regression in Arm CMN PMU driver due to broken
optimisation
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
Partially revert "perf/arm-cmn: Optimise DTC counter accesses"
Linus Torvalds [Fri, 27 Jan 2023 20:52:45 +0000 (12:52 -0800)]
Merge tag 'riscv-for-linus-6.2-rc6' of git://git./linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A few DT bindings fixes to more closely align the ISA string
requirements between the bindings and the ISA manual.
- A handful of build error/warning fixes.
- A fix to move init_cpu_topology() later in the boot flow, so it can
allocate memory.
- The IRC channel is now in the MAINTAINERS file, so it's easier to
find.
* tag 'riscv-for-linus-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Move call to init_cpu_topology() to later initialization stage
riscv/kprobe: Fix instruction simulation of JALR
riscv: fix -Wundef warning for CONFIG_RISCV_BOOT_SPINWAIT
MAINTAINERS: add an IRC entry for RISC-V
RISC-V: fix compile error from deduplicated __ALTERNATIVE_CFG_2
dt-bindings: riscv: fix single letter canonical order
dt-bindings: riscv: fix underscore requirement for multi-letter extensions
Linus Torvalds [Fri, 27 Jan 2023 20:49:00 +0000 (12:49 -0800)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
- fix nommu assignment build warning
- fix -Wundef preprocessor warning
- reduce __thumb2__ definitions for crypto files that require it
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9287/1: Reduce __thumb2__ definition to crypto files that require it
ARM: 9284/1: include <asm/pgtable.h> from proc-macros.S to fix -Wundef warnings
ARM: 9280/1: mm: fix warning on phys_addr_t to void pointer assignment
Linus Torvalds [Fri, 27 Jan 2023 20:41:09 +0000 (12:41 -0800)]
Merge tag 'linux-kselftest-fixes-6.2-rc6' of git://git./linux/kernel/git/shuah/linux-kselftest
Pull Kselftest fixes from Shuah Khan:
"A single fix to a amd-pstate test Makefile bug that deletes source
files during make clean run"
* tag 'linux-kselftest-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: amd-pstate: Don't delete source files via Makefile
Miklos Szeredi [Tue, 24 Jan 2023 15:41:18 +0000 (16:41 +0100)]
ovl: fail on invalid uid/gid mapping at copy up
If st_uid/st_gid doesn't have a mapping in the mounter's user_ns, then
copy-up should fail, just like it would fail if the mounter task was doing
the copy using "cp -a".
There's a corner case where the "cp -a" would succeed but copy up fail: if
there's a mapping of the invalid uid/gid (65534 by default) in the user
namespace. This is because stat(2) will return this value if the mapping
doesn't exist in the current user_ns and "cp -a" will in turn be able to
create a file with this uid/gid.
This behavior would be inconsistent with POSIX ACL's, which return -1 for
invalid uid/gid which result in a failed copy.
For consistency and simplicity fail the copy of the st_uid/st_gid are
invalid.
Fixes: 459c7c565ac3 ("ovl: unprivieged mounts")
Cc: <stable@vger.kernel.org> # v5.11
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Seth Forshee <sforshee@kernel.org>
Miklos Szeredi [Tue, 24 Jan 2023 15:41:18 +0000 (16:41 +0100)]
ovl: fix tmpfile leak
Missed an error cleanup.
Reported-by: syzbot+fd749a7ea127a84e0ffd@syzkaller.appspotmail.com
Fixes: 2b1a77461f16 ("ovl: use vfs_tmpfile_open() helper")
Cc: <stable@vger.kernel.org> # v6.1
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Dylan Yudaken [Fri, 27 Jan 2023 10:59:11 +0000 (02:59 -0800)]
io_uring: always prep_async for drain requests
Drain requests all go through io_drain_req, which has a quick exit in case
there is nothing pending (ie the drain is not useful). In that case it can
run the issue the request immediately.
However for safety it queues it through task work.
The problem is that in this case the request is run asynchronously, but
the async work has not been prepared through io_req_prep_async.
This has not been a problem up to now, as the task work always would run
before returning to userspace, and so the user would not have a chance to
race with it.
However - with IORING_SETUP_DEFER_TASKRUN - this is no longer the case and
the work might be defered, giving userspace a chance to change data being
referred to in the request.
Instead _always_ prep_async for drain requests, which is simpler anyway
and removes this issue.
Cc: stable@vger.kernel.org
Fixes: c0e0d6ba25f1 ("io_uring: add IORING_SETUP_DEFER_TASKRUN")
Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20230127105911.2420061-1-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Ivo Borisov Shopov [Thu, 26 Jan 2023 13:10:33 +0000 (15:10 +0200)]
tools: gpio: fix -c option of gpio-event-mon
Following line should listen for a rising edge and exit after the first
one since '-c 1' is provided.
# gpio-event-mon -n gpiochip1 -o 0 -r -c 1
It works with kernel 4.19 but it doesn't work with 5.10. In 5.10 the
above command doesn't exit after the first rising edge it keep listening
for an event forever. The '-c 1' is not taken into an account.
The problem is in commit
62757c32d5db ("tools: gpio: add multi-line
monitoring to gpio-event-mon").
Before this commit the iterator 'i' in monitor_device() is used for
counting of the events (loops). In the case of the above command (-c 1)
we should start from 0 and increment 'i' only ones and hit the 'break'
statement and exit the process. But after the above commit counting
doesn't start from 0, it start from 1 when we listen on one line.
It is because 'i' is used from one more purpose, counting of lines
(num_lines) and it isn't restore to 0 after following code
for (i = 0; i < num_lines; i++)
gpiotools_set_bit(&values.mask, i);
Restore the initial value of the iterator to 0 in order to allow counting
of loops to work for any cases.
Fixes: 62757c32d5db ("tools: gpio: add multi-line monitoring to gpio-event-mon")
Signed-off-by: Ivo Borisov Shopov <ivoshopov@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[Bartosz: tweak the commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Arnd Bergmann [Fri, 27 Jan 2023 09:35:05 +0000 (10:35 +0100)]
gpio: ep93xx: remove unused variable
This one was left behind by a previous cleanup patch:
drivers/gpio/gpio-ep93xx.c: In function 'ep93xx_gpio_add_bank':
drivers/gpio/gpio-ep93xx.c:366:34: error: unused variable 'ic' [-Werror=unused-variable]
Fixes: 216f37366e86 ("gpio: ep93xx: Make irqchip immutable")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Dave Airlie [Fri, 27 Jan 2023 02:31:02 +0000 (12:31 +1000)]
Merge tag 'drm-misc-fixes-2023-01-26' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
A fix and a preliminary patch to fix a memory leak in i915, and a use
after free fix for fbdev deferred io
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20230126104018.cbrcjxl5wefdbb2f@houat
Dave Airlie [Fri, 27 Jan 2023 02:15:13 +0000 (12:15 +1000)]
amdgpu: fix build on non-DCN platforms.
This fixes the build here locally on my 32-bit arm build.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Fri, 27 Jan 2023 01:50:08 +0000 (11:50 +1000)]
Merge tag 'amd-drm-fixes-6.2-2023-01-25' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.2-2023-01-25:
amdgpu:
- GC11.x fixes
- SMU13.0.0 fix
- Freesync video fix
- DP MST fixes
drm:
- DP MST kref fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230125220153.320248-1-alexander.deucher@amd.com
Dave Airlie [Fri, 27 Jan 2023 01:39:55 +0000 (11:39 +1000)]
Merge tag 'drm-intel-fixes-2023-01-26' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix BSC default context for Meteor Lake (Lucas)
- Fix selftest-scheduler's modify_type (Andi)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y9LKD2J5bmICTyIP@intel.com
Jens Axboe [Thu, 26 Jan 2023 18:43:33 +0000 (11:43 -0700)]
Merge tag 'nvme-6.2-2023-01-26' of git://git.infradead.org/nvme into block-6.2
Pull NVMe fixes from Christoph:
"nvme fixes for Linux 6.2
- flush initial scan_work for async probe (Keith Busch)
- fix passthrough csi check (Keith Busch)
- fix nvme-fc initialization order (Ross Lagerwall)"
* tag 'nvme-6.2-2023-01-26' of git://git.infradead.org/nvme:
nvme: fix passthrough csi check
nvme-pci: flush initial scan_work for async probe
nvme-fc: fix initialization order
Linus Torvalds [Thu, 26 Jan 2023 18:29:49 +0000 (10:29 -0800)]
Merge tag 'platform-drivers-x86-v6.2-3' of git://git./linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
- Fix false positive apple_gmux backlight detection on older iGPU only
MacBook models
- Various other small fixes and hardware-id additions
* tag 'platform-drivers-x86-v6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: thinkpad_acpi: Fix profile modes on Intel platforms
ACPI: video: Fix apple gmux detection
platform/x86: apple-gmux: Add apple_gmux_detect() helper
platform/x86: apple-gmux: Move port defines to apple-gmux.h
platform/x86: hp-wmi: Fix cast to smaller integer type warning
platform/x86/amd: pmc: Add a module parameter to disable workarounds
platform/x86/amd: pmc: Disable IRQ1 wakeup for RN/CZN
platform/x86: asus-wmi: Fix kbd_dock_devid tablet-switch reporting
platform/x86: gigabyte-wmi: add support for B450M DS3H WIFI-CF
platform/x86: hp-wmi: Handle Omen Key event
platform/x86: dell-wmi: Add a keymap for KEY_MUTE in type 0x0010 table
Linus Torvalds [Thu, 26 Jan 2023 18:20:12 +0000 (10:20 -0800)]
Merge tag 'net-6.2-rc6' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.
Current release - regressions:
- sched: sch_taprio: do not schedule in taprio_reset()
Previous releases - regressions:
- core: fix UaF in netns ops registration error path
- ipv4: prevent potential spectre v1 gadgets
- ipv6: fix reachability confirmation with proxy_ndp
- netfilter: fix for the set rbtree
- eth: fec: use page_pool_put_full_page when freeing rx buffers
- eth: iavf: fix temporary deadlock and failure to set MAC address
Previous releases - always broken:
- netlink: prevent potential spectre v1 gadgets
- netfilter: fixes for SCTP connection tracking
- mctp: struct sock lifetime fixes
- eth: ravb: fix possible hang if RIS2_QFF1 happen
- eth: tg3: resolve deadlock in tg3_reset_task() during EEH
Misc:
- Mat stepped out as MPTCP co-maintainer"
* tag 'net-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits)
net: mdio-mux-meson-g12a: force internal PHY off on mux switch
docs: networking: Fix bridge documentation URL
tsnep: Fix TX queue stop/wake for multiple queues
net/tg3: resolve deadlock in tg3_reset_task() during EEH
net: mctp: mark socks as dead on unhash, prevent re-add
net: mctp: hold key reference when looking up a general key
net: mctp: move expiry timer delete to unhash
net: mctp: add an explicit reference from a mctp_sk_key to sock
net: ravb: Fix possible hang if RIS2_QFF1 happen
net: ravb: Fix lack of register setting after system resumed for Gen3
net/x25: Fix to not accept on connected socket
ice: move devlink port creation/deletion
sctp: fail if no bound addresses can be used for a given scope
net/sched: sch_taprio: do not schedule in taprio_reset()
Revert "Merge branch 'ethtool-mac-merge'"
netrom: Fix use-after-free of a listening socket.
netfilter: conntrack: unify established states for SCTP paths
Revert "netfilter: conntrack: add sctp DATA_SENT state"
netfilter: conntrack: fix bug in for_each_sctp_chunk
netfilter: conntrack: fix vtag checks for ABORT/SHUTDOWN_COMPLETE
...
Linus Torvalds [Thu, 26 Jan 2023 18:05:39 +0000 (10:05 -0800)]
treewide: fix up files incorrectly marked executable
I'm not exactly clear on what strange workflow causes people to do it,
but clearly occasionally some files end up being committed as executable
even though they clearly aren't.
This is a reprise of commit
90fda63fa115 ("treewide: fix up files
incorrectly marked executable"), just with a different set of files (but
with the same trivial shell scripting).
So apparently we need to re-do this every five years or so, and Joe
needs to just keep reminding me to do so ;)
Reported-by: Joe Perches <joe@perches.com>
Fixes: 523375c943e5 ("drm/vmwgfx: Port vmwgfx to arm64")
Fixes: 5c439937775d ("ASoC: codecs: add support for ES8326")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ming Lei [Thu, 26 Jan 2023 11:53:46 +0000 (19:53 +0800)]
block: ublk: move ublk_chr_class destroying after devices are removed
The 'ublk_chr_class' is needed when deleting ublk char devices in
ublk_exit(), so move it after devices(idle) are removed.
Fixes the following warning reported by Harris, James R:
[ 859.178950] sysfs group 'power' not found for kobject 'ublkc0'
[ 859.178962] WARNING: CPU: 3 PID: 1109 at fs/sysfs/group.c:278 sysfs_remove_group+0x9c/0xb0
Reported-by: "Harris, James R" <james.r.harris@intel.com>
Fixes: 71f28f3136af ("ublk_drv: add io_uring based userspace block driver")
Link: https://lore.kernel.org/linux-block/Y9JlFmSgDl3+zy3N@T590/T/#t
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Tested-by: Jim Harris <james.r.harris@intel.com>
Link: https://lore.kernel.org/r/20230126115346.263344-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Robin Murphy [Mon, 23 Jan 2023 18:30:38 +0000 (18:30 +0000)]
Partially revert "perf/arm-cmn: Optimise DTC counter accesses"
It turns out the optimisation implemented by commit
4f2c3872dde5 is
totally broken, since all the places that consume hw->dtcs_used for
events other than cycle count are still not expecting it to be sparsely
populated, and fail to read all the relevant DTC counters correctly if
so.
If implemented correctly, the optimisation potentially saves up to 3
register reads per event update, which is reasonably significant for
events targeting a single node, but still not worth a massive amount of
additional code complexity overall. Getting it right within the current
design looks a fair bit more involved than it was ever intended to be,
so let's just make a functional revert which restores the old behaviour
while still backporting easily.
Fixes: 4f2c3872dde5 ("perf/arm-cmn: Optimise DTC counter accesses")
Reported-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/b41bb4ed7283c3d8400ce5cf5e6ec94915e6750f.1674498637.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Jerome Brunet [Tue, 24 Jan 2023 10:11:57 +0000 (11:11 +0100)]
net: mdio-mux-meson-g12a: force internal PHY off on mux switch
Force the internal PHY off then on when switching to the internal path.
This fixes problems where the PHY ID is not properly set.
Fixes: 7090425104db ("net: phy: add amlogic g12a mdio mux support")
Suggested-by: Qi Duan <qi.duan@amlogic.com>
Co-developed-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20230124101157.232234-1-jbrunet@baylibre.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Ivan Vecera [Tue, 24 Jan 2023 14:51:26 +0000 (15:51 +0100)]
docs: networking: Fix bridge documentation URL
Current documentation URL [1] is no longer valid.
[1] https://www.linuxfoundation.org/collaborate/workgroups/networking/bridge
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230124145127.189221-1-ivecera@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Gerhard Engleder [Tue, 24 Jan 2023 19:14:40 +0000 (20:14 +0100)]
tsnep: Fix TX queue stop/wake for multiple queues
netif_stop_queue() and netif_wake_queue() act on TX queue 0. This is ok
as long as only a single TX queue is supported. But support for multiple
TX queues was introduced with
762031375d5c and I missed to adapt stop
and wake of TX queues.
Use netif_stop_subqueue() and netif_tx_wake_queue() to act on specific
TX queue.
Fixes: 762031375d5c ("tsnep: Support multiple TX/RX queue pairs")
Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Link: https://lore.kernel.org/r/20230124191440.56887-1-gerhard@engleder-embedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
David Christensen [Tue, 24 Jan 2023 18:53:39 +0000 (13:53 -0500)]
net/tg3: resolve deadlock in tg3_reset_task() during EEH
During EEH error injection testing, a deadlock was encountered in the tg3
driver when tg3_io_error_detected() was attempting to cancel outstanding
reset tasks:
crash> foreach UN bt
...
PID: 159 TASK:
c0000000067c6000 CPU: 8 COMMAND: "eehd"
...
#5 [
c00000000681f990] __cancel_work_timer at
c00000000019fd18
#6 [
c00000000681fa30] tg3_io_error_detected at
c00800000295f098 [tg3]
#7 [
c00000000681faf0] eeh_report_error at
c00000000004e25c
...
PID: 290 TASK:
c000000036e5f800 CPU: 6 COMMAND: "kworker/6:1"
...
#4 [
c00000003721fbc0] rtnl_lock at
c000000000c940d8
#5 [
c00000003721fbe0] tg3_reset_task at
c008000002969358 [tg3]
#6 [
c00000003721fc60] process_one_work at
c00000000019e5c4
...
PID: 296 TASK:
c000000037a65800 CPU: 21 COMMAND: "kworker/21:1"
...
#4 [
c000000037247bc0] rtnl_lock at
c000000000c940d8
#5 [
c000000037247be0] tg3_reset_task at
c008000002969358 [tg3]
#6 [
c000000037247c60] process_one_work at
c00000000019e5c4
...
PID: 655 TASK:
c000000036f49000 CPU: 16 COMMAND: "kworker/16:2"
...:1
#4 [
c0000000373ebbc0] rtnl_lock at
c000000000c940d8
#5 [
c0000000373ebbe0] tg3_reset_task at
c008000002969358 [tg3]
#6 [
c0000000373ebc60] process_one_work at
c00000000019e5c4
...
Code inspection shows that both tg3_io_error_detected() and
tg3_reset_task() attempt to acquire the RTNL lock at the beginning of
their code blocks. If tg3_reset_task() should happen to execute between
the times when tg3_io_error_deteced() acquires the RTNL lock and
tg3_reset_task_cancel() is called, a deadlock will occur.
Moving tg3_reset_task_cancel() call earlier within the code block, prior
to acquiring RTNL, prevents this from happening, but also exposes another
deadlock issue where tg3_reset_task() may execute AFTER
tg3_io_error_detected() has executed:
crash> foreach UN bt
PID: 159 TASK:
c0000000067d2000 CPU: 9 COMMAND: "eehd"
...
#4 [
c000000006867a60] rtnl_lock at
c000000000c940d8
#5 [
c000000006867a80] tg3_io_slot_reset at
c0080000026c2ea8 [tg3]
#6 [
c000000006867b00] eeh_report_reset at
c00000000004de88
...
PID: 363 TASK:
c000000037564000 CPU: 6 COMMAND: "kworker/6:1"
...
#3 [
c000000036c1bb70] msleep at
c000000000259e6c
#4 [
c000000036c1bba0] napi_disable at
c000000000c6b848
#5 [
c000000036c1bbe0] tg3_reset_task at
c0080000026d942c [tg3]
#6 [
c000000036c1bc60] process_one_work at
c00000000019e5c4
...
This issue can be avoided by aborting tg3_reset_task() if EEH error
recovery is already in progress.
Fixes: db84bf43ef23 ("tg3: tg3_reset_task() needs to use rtnl_lock to synchronize")
Signed-off-by: David Christensen <drc@linux.vnet.ibm.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230124185339.225806-1-drc@linux.vnet.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Namjae Jeon [Tue, 24 Jan 2023 15:09:02 +0000 (00:09 +0900)]
ksmbd: downgrade ndr version error message to debug
When user switch samba to ksmbd, The following message flood is coming
when accessing files. Samba seems to changs dos attribute version to v5.
This patch downgrade ndr version error message to debug.
$ dmesg
...
[68971.766914] ksmbd: v5 version is not supported
[68971.779808] ksmbd: v5 version is not supported
[68971.871544] ksmbd: v5 version is not supported
[68971.910135] ksmbd: v5 version is not supported
...
Cc: stable@vger.kernel.org
Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3")
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Namjae Jeon [Tue, 24 Jan 2023 15:13:20 +0000 (00:13 +0900)]
ksmbd: limit pdu length size according to connection status
Stream protocol length will never be larger than 16KB until session setup.
After session setup, the size of requests will not be larger than
16KB + SMB2 MAX WRITE size. This patch limits these invalidly oversized
requests and closes the connection immediately.
Fixes: 0626e6641f6b ("cifsd: add server handler for central processing and tranport layers")
Cc: stable@vger.kernel.org
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-18259
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Dan Williams [Sat, 21 Jan 2023 00:26:12 +0000 (16:26 -0800)]
cxl/pmem: Fix nvdimm unregistration when cxl_pmem driver is absent
The cxl_pmem.ko module houses the driver for both cxl_nvdimm_bridge
objects and cxl_nvdimm objects. When the core creates a cxl_nvdimm it
arranges for it to be autoremoved when the bridge goes down. However, if
the bridge never initialized because the cxl_pmem.ko module never
loaded, it sets up a the following crash scenario:
BUG: kernel NULL pointer dereference, address:
0000000000000478
[..]
RIP: 0010:cxl_nvdimm_probe+0x99/0x140 [cxl_pmem]
[..]
Call Trace:
<TASK>
cxl_bus_probe+0x17/0x50 [cxl_core]
really_probe+0xde/0x380
__driver_probe_device+0x78/0x170
driver_probe_device+0x1f/0x90
__driver_attach+0xd2/0x1c0
bus_for_each_dev+0x79/0xc0
bus_add_driver+0x1b1/0x200
driver_register+0x89/0xe0
cxl_pmem_init+0x50/0xff0 [cxl_pmem]
It turns out the recent rework to simplify nvdimm probing obviated the
need to unregister cxl_nvdimm objects at cxl_nvdimm_bridge ->remove()
time. Leave the cxl_nvdimm device registered until the hosting
cxl_memdev departs. The alternative is that the cxl_memdev needs to be
reattached whenever the cxl_nvdimm_bridge attach state cycles, which is
awkward and unnecessary.
The only requirement is to make sure that when the cxl_nvdimm_bridge
goes away any dependent cxl_nvdimm objects are shutdown. Handle that in
unregister_nvdimm_bus().
With these registration entanglements removed there is no longer a need
to pre-load the cxl_pmem module in cxl_acpi.
Fixes: cb9cfff82f6a ("cxl/acpi: Simplify cxl_nvdimm_bridge probing")
Reported-by: Gregory Price <gregory.price@memverge.com>
Debugged-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/167426077263.3955046.9695309346988027311.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Kees Cook [Fri, 6 Jan 2023 06:02:33 +0000 (22:02 -0800)]
bcache: Silence memcpy() run-time false positive warnings
struct bkey has internal padding in a union, but it isn't always named
the same (e.g. key ## _pad, key_p, etc). This makes it extremely hard
for the compiler to reason about the available size of copies done
against such keys. Use unsafe_memcpy() for now, to silence the many
run-time false positive warnings:
memcpy: detected field-spanning write (size 264) of single field "&i->j" at drivers/md/bcache/journal.c:152 (size 240)
memcpy: detected field-spanning write (size 24) of single field "&b->key" at drivers/md/bcache/btree.c:939 (size 16)
memcpy: detected field-spanning write (size 24) of single field "&temp.key" at drivers/md/bcache/extents.c:428 (size 16)
Reported-by: Alexandre Pereira <alexpereira@disroot.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216785
Acked-by: Coly Li <colyli@suse.de>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: linux-bcache@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230106060229.never.047-kees@kernel.org
Kees Cook [Wed, 18 Jan 2023 20:21:35 +0000 (12:21 -0800)]
gcc-plugins: Reorganize gimple includes for GCC 13
The gimple-iterator.h header must be included before gimple-fold.h
starting with GCC 13. Reorganize gimple headers to work for all GCC
versions.
Reported-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/all/20230113173033.4380-1-palmer@rivosinc.com/
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Kees Cook [Sat, 7 Jan 2023 03:47:05 +0000 (19:47 -0800)]
kunit: memcpy: Split slow memcpy tests into MEMCPY_SLOW_KUNIT_TEST
Since the long memcpy tests may stall a system for tens of seconds
in virtualized architecture environments, split those tests off under
CONFIG_MEMCPY_SLOW_KUNIT_TEST so they can be separately disabled.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/lkml/20221226195206.GA2626419@roeck-us.net
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: David Gow <davidgow@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>